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1. 发明专利

JP2002029014A LAMINATED FILM 失效
公开(公告)号：JP2002029014A
公开(公告)日：2002-01-29
申请号：JP2000215956
申请日：2000-07-17
申请人： TOYO BOSEKI
发明人： FUJITA SHINJI , MUKOYAMA YUKINOBU , SUMINO HIROSHI , ITO KATSUYA
IPC分类号： C08J7/06 , B29C55/14 , B32B27/34 , B32B37/00 , C08J5/18 , C08L77/00 , C08L77/06 , C08L101/00 , B32B31/16
摘要： PROBLEM TO BE SOLVED: To economically provide a laminated film excellent not only in gas barrier properties and adhesiveness but also in transparency at an initial stage and even after boiling treatment. SOLUTION: In the laminated biaxially oriented polyamide film wherein an inorganic vapor deposition layer and a sealant layer are successively provided on the single surface of at least the A-layer of a biaxially oriented polyamaide film comprising layered constitution of A/B, A/B/A or A/B/C and characterized by that the density of projections with a height of 0.27 μm or more is 200/mm2 on the surface of the A-layer of the polyamide film over the total width of the polyamide film, the maximum dimensional change ratio of the biaxially oriented polyamide film during the immersion in hot water at 95 deg.C is 3.0% or less over the total width of the biaxially oriented polyamaide film and the maximum dimensional change ratio difference is 2.0% or less and the average dimensional change ratio after taken out of hot water is 2.0% or less and the maximum dimensional change ratio difference is 2.0% or less.

2. 发明专利

JP2001145989A GAS BARRIER LAMINATED FILM 失效
公开(公告)号：JP2001145989A
公开(公告)日：2001-05-29
申请号：JP33021299
申请日：1999-11-19
申请人： TOYO BOSEKI
发明人： YONEDA SHIGERU , FUJITA SHINJI , MUKOYAMA YUKINOBU , IZEKI SEIJI , YOKOYAMA SEIICHIRO , MORISHIGE CHIKAO
IPC分类号： B32B27/34
摘要： PROBLEM TO BE SOLVED: To economically provide a gas barrier laminated film or sheet which has excellent transparency, gas barrier properties and adhesive properties and has no possibility of damaging its excellent barrier properties even after boiling treatment and printing process are performed and provides good bending resistance and strength characteristics being sufficiently durable to ball fall impact and in addition, exhibits excellent heat seal properties. SOLUTION: The gas barrier laminated film is a film wherein a gas barrier layer comprising a layer with improved adhesion formed on at least one face of a polyamide film and in addition, a metal oxide thin film layer formed thereon, is formed and a polyolefin film is laminated on the above described metal oxide thin film layer and area change rate of the above described polyamide film after it is immersed in hot water at 95 deg.C to the film before it is immersed in the hot water is at most 2.0% and the area change rate of the film after it is taken out of the hot water to the film before it is immersed in the hot water is at least -6.0%.

3. 发明专利

JP2002103509A GAS BARRIER FILM 失效
公开(公告)号：JP2002103509A
公开(公告)日：2002-04-09
申请号：JP2000303934
申请日：2000-10-03
申请人： TOYO BOSEKI
发明人： SUZUKI SHINJI , MUKOYAMA YUKINOBU , ITO KATSUYA
IPC分类号： B32B9/00 , C23C14/08 , C23C14/10
摘要： PROBLEM TO BE SOLVED: To provide a packaging material excellent in gas barrier properties and adapted to the airtight packing of food, medicines, electronic parts or the like, or a gas barrier film having excellent characteristics as a gas barrier material. SOLUTION: The gas barrier film having gas barrier properties consists of a plastic film and the inorganic membrane layer provided on at least the single surface of the plastic film. When the gas barrier film is observed by a scanning electromicroscope after the inorganic membrane layer thereof is exposed to trifluoroacetic acid vapor for 15 sec, the number of recessed parts with a diameter of 5 μm or more capable of being observed in a visual field of 180×240 μm is 5 or less.

4. 发明专利

JP2002029013A LAMINATED FILM 失效
公开(公告)号：JP2002029013A
公开(公告)日：2002-01-29
申请号：JP2000215955
申请日：2000-07-17
申请人： TOYO BOSEKI
发明人： FUJITA SHINJI , MUKOYAMA YUKINOBU , SUMINO HIROSHI , ITO KATSUYA
IPC分类号： B32B27/34 , B29C55/14 , B32B37/00 , C08L77/06 , B32B31/16
摘要： PROBLEM TO BE SOLVED: To economically provide a laminated biaxially oriented polyamide film excellent not only in gas barrier properties and adhesiveness but also in transparency at an initial stage and even after boiling treatment in such a case that the laminated film is provided with a sealant layer to be used as a packaging bag. SOLUTION: In the laminated biaxially oriented polyamide film wherein an inorganic vapor deposition layer and a sealant layer are successively provided on the single surface of at least the A-layer of a biaxially oriented polyamaide film comprising layered constitution of A/B, A/B/A or A/B/C and characterized by that the density of projections with a height of 0.27 μm or more is

5. 发明专利

JP2003145670A GAS BARRIER FILM 审中-公开
公开(公告)号：JP2003145670A
公开(公告)日：2003-05-20
申请号：JP2001343593
申请日：2001-11-08
申请人： TOYO BOSEKI
发明人： NUMATA YUKIHIRO , MUKOYAMA YUKINOBU , TANABE MASATOSHI
IPC分类号： B65D81/24 , B32B9/00 , B65D65/40
摘要： PROBLEM TO BE SOLVED: To provide a packaging material for dry foods composed of a part or the entirety of a film which especially shows reliable steam barrier properties and high resistance to flexing and a pack. SOLUTION: The gas barrier film is structured of an alumina and a thin film made of a silicon oxide laminated on at least one of the sides of a plastic base material. In addition, the thin film is characterized in that the surface energy of the thin film is 30 to 60 dyne/cm and the permeability to steam is 5 g/m day or less.

6. 发明专利

JP2002103446A METHOD FOR PRODUCING BIAXIALLY ORIENTED POLYAMIDE FILM, BIAXIALLY ORIENTED POLYAMIDE FILM BY THE METHOD, AND LAMINATED FILM USING THE POLYAMIDE FILM 失效
公开(公告)号：JP2002103446A
公开(公告)日：2002-04-09
申请号：JP2000299625
申请日：2000-09-29
申请人： TOYO BOSEKI
发明人： FUJITA SHINJI , MUKOYAMA YUKINOBU , ITO KATSUYA
IPC分类号： B32B9/00 , B29C55/16 , B32B27/34 , C08L77/00
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a biaxially oriented polyamide film which is excellent in gas-barrier properties and adhesion before and after boiling treatment, transparency and flexural fatigue resistance and can be used for a gas-barrier film. SOLUTION: A gas-barrier film, especially excellent in gas-barrier properties, is provided by a method in which a substantially unoriented polyamide film having the layer structure of A/B, A/B/A, or A/B/C is preheated with the use of a heating medium and then stretched by using a tenter driven by a linear motor method.

7. 发明专利

JP2002088174A BIAXIALLY ORIENTED POLYAMIDE FILM 失效
公开(公告)号：JP2002088174A
公开(公告)日：2002-03-27
申请号：JP2000276838
申请日：2000-09-12
申请人： TOYO BOSEKI
发明人： SUGIMOTO MASANORI , FUJITA SHINJI , MUKOYAMA YUKINOBU
IPC分类号： C08J5/18 , B29C55/14 , B32B27/34
摘要： PROBLEM TO BE SOLVED: To provide a biaxially oriented polyamide film which has excellent film characteristics necessary for packaging films such as an oxygen barrier property, flexural fatigue resistance and transparency, can prevent the deterioration and discoloration of contents when used as a packaging film for various goods, can protect the contents from impacts during transportation even at a low temperature, and is suitable for the use of the packaging. SOLUTION: This biaxially oriented polyamide film characterized in that the measured dynamic viscoelasticity value tanδ in the width direction is >=0.03 at a measurement temperature of 5 deg.C and 0.06 to 0.08 at a measurement temperature of 23 deg.C.

8. 发明专利

JP2002029015A LAMINATED FILM 失效
公开(公告)号：JP2002029015A
公开(公告)日：2002-01-29
申请号：JP2000216449
申请日：2000-07-17
申请人： TOYO BOSEKI
发明人： FUJITA SHINJI , MUKOYAMA YUKINOBU , SUMINO HIROSHI , ITO KATSUYA
IPC分类号： B32B27/34 , B29C55/14 , B32B37/00 , C08L77/06 , B32B31/16
摘要： PROBLEM TO BE SOLVED: To economically provide a laminated biaxially oriented polyamide film excellent not only in gas barrier properties and adhesiveness but also in transparency at an initial stage and even after boiling treatment in such a case that the laminated film is provided with a sealant layer to be used as a packaging bag. SOLUTION: In the laminated biaxially oriented polyamide film wherein an inorganic vapor deposition layer and a sealant layer are successively provided on the single surface of at least the A-layer of a biaxially oriented polyamaide film comprising layered constitution of A/B, A/B/A or A/B/C and characterized by that the density of projections with a height of 0.27 μm or more is

9. 发明专利

JP2000309074A LAMINATED BIAXIALLY ORIENTED POLYAMIDE FILM 失效
公开(公告)号：JP2000309074A
公开(公告)日：2000-11-07
申请号：JP2000044637
申请日：2000-02-22
申请人： TOYO BOSEKI
发明人： FUJITA SHINJI , SUGIMOTO MASANORI , MUKOYAMA YUKINOBU , YONEDA SHIGERU , MORISHIGE CHIKAO , IZEKI SEIJI , YOKOYAMA SEIICHIRO
IPC分类号： B65D65/40 , B29C55/14 , B32B9/00 , B32B27/34 , C08J5/18
摘要： PROBLEM TO BE SOLVED: To keep excellent gas-barrier property, bondability, transparency and anti- flex-fatigue property even in an initial stage and after a boil treatment when a biaxially oriented polyamide film is formed into a packaging bag by providing a sealant layer by respectively specifying maximum dimensional change rates during a hot water dipping at a specified temperature and after being taken out, of the biaxially oriented polyamide film. SOLUTION: A polyamide composition of a mixture of an aromatic polyamide resin(PR) comprising a terephthalic acid or the like and an aromatic PR comprising an isophthalic acid of the like and/or a copolymer (X) and an aliphatic PR (Y), or X solely, is used for a layer A. A layer B comprises a composition of Y solely, or Y and X, Y and an anti-flex fatigue property modifier (Z), or one kind from among compositions comprising X, Y and Z, and a layer C comprises a composition of X and/or Y. This bixially oriented polyamide film has a layer constitution of A/B, A/B/A or A/B/C, and the maximum dimensional change rates during a 95 deg.C hot water dipping and after being taken out from the hot water are respectively 4.0% or lower, and 5.0% or lower. By this constitution, both of an excellent gas-barrier property and the anti-bending fatigue property or the like are provided even in the initial stage and after the boil treatment.

10. 发明专利

JP2001341253A POLYAMIDE LAMINATE FILM 失效
公开(公告)号：JP2001341253A
公开(公告)日：2001-12-11
申请号：JP2000167892
申请日：2000-06-05
申请人： TOYO BOSEKI
发明人： SUMINO HIROSHI , FUJITA SHINJI , MUKOYAMA YUKINOBU , ITO KATSUYA
IPC分类号： B32B27/34 , B32B27/32 , C08L77/00 , C08L77/06
摘要： PROBLEM TO BE SOLVED: To provide a polyamide laminate film capable of protecting a content against an impact during transporting and having excellent oxygen gas barrier properties, and flexing fatigue resistance and transparency by preventing a change of properties or discoloring of the content when used as various packaging materials. SOLUTION: The polyamide laminate film comprises a layer B made of a mixed polymer containing an aliphatic polyamide of 99 to 80 wt.% and an ionomer polymer of a flexing fatigue modifier of 1 to 20 wt.%, and laminated on at least one side surface of a layer A made of a polyamide polymer containing a diamine component containing a methaxylylene diamine as a main diamine component and a 6-12C α,ωaliphatic dicarboxylic acid as a main dicarboxylic acid component.

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